drop-down menus not rolling back up on iPhone

Hi, I used the JavaScript available at http://javascriptkit.com/script/scri...stopmenu.shtml to create drop-down menus. They work quite well in most situations. On a Samsung Galaxy the menus appear when I tap on the links and then disappear when I tap outside of them; on an iPhone they also appear when I tap on the links but they don't disappear. How can I fix this?

If seeing the website would help, it's http://www.lostrootsfamilyhistory.com.

Thank you for your help.